20512210

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2297}}^1$

素因数の和:2370

約数の個数: 32

約数和(自身を含む): 39709440

約数和(自身を除く): 19197230

約数列:

[1, 2, 5, 10, 19, 38, 47, 94, 95, 190, 235, 470, 893, 1786, 2297, 4465, 4594, 8930, 11485, 22970, 43643, 87286, 107959, 215918, 218215, 436430, 539795, 1079590, 2051221, 4102442, 10256105, 20512210]

約数ペア:

[(1, 20512210), (2, 10256105), (5, 4102442), (10, 2051221), (19, 1079590), (38, 539795), (47, 436430), (94, 218215), (95, 215918), (190, 107959), (235, 87286), (470, 43643), (893, 22970), (1786, 11485), (2297, 8930), (4465, 4594)]